User:ArrowHead294/Regex snippets: Difference between revisions

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| Match a number
| Match a number
|- style="border-top: double;
|- style="border-top: double;
| <code><nowiki>(?<=\n*)(=+)\s*([^\r\n\t]+)\s*(=+)(?=\n*)</nowiki></code>
| <code><nowiki>(?<=\n)(=+)\s*((?:[^\s=]+\s*)+[^\s=])\s*(=+)</nowiki></code><br />or <code><nowiki>(?<=\n)(\=+)\s*((?:[^\s\=]+\s*)+[^\s\=])\s*(\=+)</nowiki></code>
| <code>$1 $2 $3</code>
| <code>$1 $2 $3</code>
| Space out equals signs for section headers*
| Space out equals signs for section headers*

Revision as of 13:36, 20 January 2025

These are some regular expressions I use for formatting purposes:

Pattern Replace by Purpose
^(?:\+|-|\x{2212})?(?:(?:\d{1,3}?(?:\,\d{3})*|\d+)\.?\d*|\d*\.?\d+)(?:[Ee][+-]?\d+)?$ N/A Match a number
(?<=\n)(=+)\s*((?:[^\s=]+\s*)+[^\s=])\s*(=+)
or (?<=\n)(\=+)\s*((?:[^\s\=]+\s*)+[^\s\=])\s*(\=+)
$1 $2 $3 Space out equals signs for section headers*
(?<=\n)\|\s*(?!-|\{|\}) $1  Space out pipe characters and header separators in tables (one cell per line)*
(?<=\n)(\||!)[^\S\r\n]*\|?[^\S\r\n]*(?!-|\}) Replace ! |  and | |  with and , respectively
(?<=\[\[|\|)(\d+[Ll])\s*(\d+[Ss])(?=\]\]])?(?!\s) $1&nbsp;$2 Make sure xys notation for MOS scales are non-wrapped
(?<!(?:<(\w+-)*\w+>[^\n]*(?=<\/(\w+-)*\w+>)|\{|\}))[^\S\r\n]*(\|\|\|?|!!!?)[^\S\r\n]*(?!-|[^\n]*<\/(\w+-)*\w+>(?=<(\w+-)*\w+>)|\{|\})  $1  Space out pipe characters and header separators in tables (entire row per line)*
<math>,*\s*\\frac(\d)(\d),*\s*<\/math> {{frac|$1|$2}} or
{{sfrac|$1|$2}}
Standalone fractions with single-digit numerators and denominators can be done using {{frac}} or {{sfrac}} and don't need to be TeXified

* Requires support for variable-width lookaheads and lookbehinds

See also